7x*7x=-21

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Solution for 7x*7x=-21 equation:


Simplifying
7x * 7x = -21

Reorder the terms for easier multiplication:
7 * 7x * x = -21

Multiply 7 * 7
49x * x = -21

Multiply x * x
49x2 = -21

Solving
49x2 = -21

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '49'.
x2 = -0.4285714286

Simplifying
x2 = -0.4285714286

Reorder the terms:
0.4285714286 + x2 = -0.4285714286 + 0.4285714286

Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000
0.4285714286 + x2 = 0.0000000000

The solution to this equation could not be determined.

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